Improvement in force-pumps



0. W. GROYV'ER. FORCE-Hrm?.

Patented Nov. 21, 41876.

WTA/5655.- I Y@ i eg.

UNITED STATES PATENT OFFICE..

'ORVIS W. GROVER, 0F MIDDLEBURY, VERMONT.

IMPROVEMENT IN. FORCE-PUMPS.

Specification forming part of Letters Patent No. 184,613, dated November 21, 1876; application led a .December 10, 1875.

To all whom 'it may concern.- Y Be it known that I, ORVIS W. GROVER, of Middlebury, in the county of Addison and State of Vermont, haveinvented certain new anduseful Improvements in Force-Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, which -form part of this specification.

The main object of my invention is to so arrange the parts of a forcepump that a contin nous stream of water may be thrown by actuating its handle, without the employment of an air-chamber to establish a continuous equable stream 5 and to this end the nature of my invention consists in the construction of parts, as will vloe hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I wil-l now proceed to describe its construction and operation, referring to the annexed drawing, in which the figure is a longitudinal section of my pump.

A represents the pump-stock, to the side of which, at the lower end, is attached the pumpcylinder B, by means of clamps C C. The

cylinder B communicates at or near both endsy with the interior of the pump-stock by valves a af, which open inward into the stock. D is the piston within the cylinder B, connected by a rod, b, with the operating-handle E,.said rod being either somewhat elastic or yielding, or, if rigid, provided with a joint, so as to in either case conform to the curve of the molion of the inner end of the handle, to which.

it is attached. The pump-cylinder B is iutended to be entirely submerged, and the ends thereof are provided with inwardly-opening valves d df, the top valve dl loosely surrounding the rod b and moving up and down on the same, its downward motion being arrested by a seat, lr. It will be seen that the water is supplied on both sides of the piston, and when the pump is in operation a steady continuous stream of water is thrown out of the pump-stock.

The construction of the pump admits of getting to the valves forprepairs by simply loosening the clamps C C; and the pump is strong and durable, and not liable to get out of order. v

Having thus fully described my invention, wha-tl claim as new, and desire to secure by Letters Patent, is-

The combination with the main pump-stock Aof a cylinder, B, open at both ends, andv provided near the top with a valve-seat, a, the valve d loosely surrounding and moving up and down on the rod b, the piston D, and valves a a d, all constructed substantially as and for the purposes herein set forth.

. In testimony that l claim the foregoing as my own, I affix my signature in presence of two witnesses.

ORVIS W. GROVER. Witnesses:

RUFUs WAINWRIGHT, SOLOMON LAPINE. 

